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As we can see in Figure 4.1.8, the number of hidden safety problems of the vehi-
cle are rosing to about 20 and the fluctuation is not stable, so under the light traffic,
there is dangerous drive vehicle on the highway.
4.1.3%to%Discuss%the%Improvement%Method%about%Keep-Left-Except-To-Pass%
In order to improve traffic flow in the heavy traffic case, we need to put forward
the improvement method of "Keep-Right-Except-To-Pass", our improved method is
add the following rules in the "Keep-Right-Except-To-Pass" basis:
From left to right, setting carriageway in a certain speed gradient. At the same
time, redefining the concept of the overtaking lane according to vehicle models. For
example, large trucks can only use the right lane and only to overtake in the second
right lane. Then for large trucks, the lane is overtaking lane, the left lane is this type
of overtaking lane. The other case analogy.
Because this model is no longer applicable this set of traffic rules, we no longer
make detailed theoretical analysis due to limited space, here only discuss the feasibil-
ity of a solution.
After adding some rules, vehicles will get a better classification on the road, for
large trucks running slower, they are always in the right lane, there will not occur the
phenomenon that randomly occupied the carriageway and subsequent vehicles can't
overtake. In this case, not only to enhance the success rate of overtaking, but also
enhance the traffic flow, but also convenient traffic management.
4.2 Keep-Left-Except-To-Pass Contrastive Analysis
The situation may change in the countries where it is re-
quired to drive on the left. Although the difference between driv-
ing on the left and on the right is only mirror symmetry, driving on the left theory
should be identical to the right road. But from a series of researches in the litera-
tures [5-7] we can come to the conclusion:
On the one hand, on the left side of the road, accident fatality rate can be reduced.
In case of emergency, most people will instinctively tilted to the left or turn a direction.
On the other hand, when the lane change, there is a high probability of the driver
which is moving to left lane rearview at left rear mirror and a high probability of the
driver which is moving to right lane rearview at right rear mirror. That show that the
driver mainly to obtain external information from the lane-changing, traffic information
from the lane-changing is much more important. In the entire decision-making and im-
plementation stage, the driver to obtain information more widely range and the driver's
visual scanning is more flexible when they move a lane to right. Therefore, on the left
side of the road, overtaking has better flexibility and security.
The causes above don't change the input data, but we can believe that the driver
can precisely control the distance between two vehicles. As a result, the updated infor-
mation of the road condition described in 3.1.2 should be adjusted subtly. We adjust the